1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c44415a43901e9b6f45166e616ccbc8ad62f3912097fda664c282b4561bd49. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/953a46d7-b3eb-4ded-bbef-fc6ce8448afa.json and https://artists.proofprofile.net/proofs/artist/953a46d7-b3eb-4ded-bbef-fc6ce8448afa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lovely Dream (Piękny Sen - English Version)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4434e6c5e0d51e5ff93a29dbfaaa011141be3a1fc436332457d034c7ee4488fc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2285960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e4b11939b144bf28d8ed97c32e52766b1cad0cb378e597e30428eb35d02450. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2285961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6e95cec1c11ee757b4247d3b443c93e302c14d3ea6d9843c72a60da84f8faf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2285962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8025030742702d1051c34be97b27c0ca2fee4d9ead378c49bc1578d678ac59b9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2285963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe698863caeff5dafa755ee3a4b89eddde1ac5b8bc542c0639b9f9dacf4e10c4b. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2251275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0b72148e5f337fbf65920653e53354b814849e389aeb49fa0294937f07a4cd. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2285964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7366a1b15266fe3ebc264cb73ddab4121317528ee3124e4635400e86bfe913c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2395611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f60971f383ee4f7fb49195e0225a9f7ce066212d6695056625bf2341b4a72d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2395623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb56336adfed18822331137a7fb961dd0162ac408386c3ec8b0c127187206e2a. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2395613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69738d278ef9f3ce385277dbf6a4199713777f99ff37471edac96d109c7d1396. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2395614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a8a2e6e333af3a8a119fa7e071f77af2bb719d5ae97e746b23a9e7b2b1c439. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2395617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6694a2e55e8c995f398e3618f087f741ffbed64d2337e8e75691f045fb43f3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2395618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cc15e0bd12e6eac7807a2d82548a14f0af820dc12358b05d917bd068ba67d2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAS2373545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc7a7c9a92fcec7dae7d8bd31622a8f1ef994ed409a7ad37650b18c72f441af. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2395620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b797e8a2ff046097ddf3257272884c61c9b3de0c89a05669df2f7fcf02c6c5. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2395621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4527d004500b2014fcadd3318234c5268094a2ad2933eba2d74f0d51b1a052d4. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2395622.
Jest we mnie miłość (Freedom - Polish version) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7afd44ce17b1446fb869531675e6c98c67767014f587b851372577cdfd1e9b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ782449703.